#3A90AB
Closest named color: Blue NCS (#118AB2). oklch(61.3% 0.091 222.1), rgb(58, 144, 171).
Aa
Black text reads best on this color (5.75:1).
About this color
#3A90AB is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 61%, its chroma 0.091 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.031 away. Black text reads best on it, at 5.75:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.75:1 |
| White text | 3.64:1 |
Values
| HEX | #3A90AB |
| RGB | rgb(58, 144, 171) |
| HSL | hsl(194, 49%, 45%) |
| OKLCH | oklch(61.3% 0.091 222.1) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #3A90AB | 3.64:1 | AA large text | Lc -69.3 | Content text, not long reading |
| Black text on #3A90AB | 5.75:1 | AA | Lc 40.3 | Non-text elements, placeholder text |
| #3A90AB text on white | 3.64:1 | AA large text | Lc 63.8 | Content text, not long reading |
| #3A90AB text on black | 5.75:1 | AA | Lc -37.9 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C8DDE5
oklch(88.4% 0.025 222.6)
-
Step 300
300
#A2C8D5
oklch(81% 0.044 220.7)
-
Step 400
400
#6DABC0
oklch(70.7% 0.071 221.5)
-
Step 500
500 (this color)
#3A90AB
oklch(61.3% 0.091 222.1)
-
Step 600
600
#13809D
oklch(55.7% 0.099 222)
-
Step 700
700
#006C85
oklch(49.2% 0.09 221.2)
-
Step 800
800
#09586D
oklch(42.8% 0.076 222.2)
-
Step 900
900
#154858
oklch(37.6% 0.059 222.8)
-
Step 950
950
#0E2A34
oklch(26.9% 0.038 224.5)
#3A90AB with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #808DAC | 0.073 |
| Deuteranopia (no green cones) | #7081AB | 0.065 |
| Tritanopia (no blue cones) | #009999 | 0.049 |
| Achromatopsia (no color) | #868686 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A90AB
#3A90AB
oklch(61.3% 0.091 222.1)
- #B27158
#B27158
oklch(61.2% 0.091 41.7)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #3A90AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.031
- Dusty Blue #5A86AD ΔE 0.039
- Teal Blue #01889F ΔE 0.039
- Off Blue #5684AE ΔE 0.041
- Teal Green #0A9396 ΔE 0.043
- Cool Blue #4984B8 ΔE 0.046
- Steel Blue #4682B4 ΔE 0.047
- Faded Blue #658CBB ΔE 0.051
Use #3A90AB in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.